ALSEYE S-90 Flying Crab 1500 RPM 3pin 90mm Ultra-quiet Computer Case Fan The "crab legs" element in the design of fan efficiently increases the air flow by 15% and a 5% reduction in noise unique silicone skin: not only provide vibrationless contact, but also give you big enjoy of fashion Fan Speed: 1500 RPM  10% Input Power: 2.52W Life: 40,000 hours